Mechanism for a cosmetic product and container comprising such a mechanism

Abstract

A mechanism for a cosmetic product and a container including such a mechanism are disclosed. The mechanism (1) of the product comprises a cup (212) configured to accommodate the product, a sleeve (434) and a guide (316) arranged around the sleeve, the cup comprising at least one flexible tab (270), the sleeve comprising a spiral groove for cooperating with the cup to raise or lower the product, and the guide comprising at least one vertical slide, the at least one vertical slide defining a displacement path of the cup and cooperating with the at least one flexible tab. According to the present invention, the sleeve (434), the cup (212) and the guide (316) are made of a type of metal material.

Description

Technical Field

[0001] The present invention relates to a mechanism for a cosmetic product, in particular a lipstick in stick form, and a container comprising such a mechanism. Background Art

[0002] In the field of cosmetic products, a container is known which comprises a base in which a mechanism containing the product is housed. A closed lid seals the upper opening of the mechanism in a leaktight manner and provides protection for the product.

[0003] This cosmetic container mechanism is assembled from rotating parts, wherein a main body, usually called a guide, covers a cup-shaped portion for containing lipstick. The cup-shaped portion moves relative to the guide to move the stick body in the main body or to remove the stick body through the opening of the guide so that the user who wants to apply makeup can take it.

[0004] Furthermore, in order to maintain aesthetics, an outer sleeve made of a metal material is installed around the guide member, and the outer sleeve is fixed integrally with the guide member.

[0005] Such mechanisms usually have a large number of parts, resulting in a considerable radial thickness between the edge of the stick and the exterior of the mechanism. Furthermore, these mechanisms are complex, especially for so-called "guided" mechanisms used for so-called soft lipstick formulations. For such formulations, the stick needs to be in direct contact with a portion of the mechanism to ensure that the stick is held and relatively smooth, thereby avoiding damage to the stick, especially when the stick is displaced to apply the cosmetic product.

[0006] Different designs are known to simplify the number of components of a guided mechanism, which comprises at least one cup, a spiral sleeve and an outer sleeve, the spiral sleeve comprising at least one spiral groove on its outer surface. The cup is mounted in the outer sleeve and surrounds the spiral sleeve. The outer sleeve is integrally formed with the guide of the mechanism in its lower part. The sleeve also comprises a roller at its lower end, the mechanism being actuated by the counter-rotating movement of the roller and the outer sleeve.

[0007] For aesthetic reasons, by their design, these mechanisms are mainly made of synthetic materials but with an outer metal sleeve. However, the choice of material determines its ability to be recycled in specialized recycling sectors. The reuse aspect is also a major one and if the product is often associated with luxury goods with important finishes and high-value functional designs, the concern to be able to clean and recycle the mechanism, in whole or in part, without damaging it, is an increasingly important need.

[0008] The recycling of such a mechanism, which is mainly made of synthetic material, in combination with such an outer metal sleeve involves contamination of the recycling departments dedicated to synthetic materials. Thus, undesirable shavings or particles of metallic material are found in the recycled plastic material, which are not eliminated, making it difficult to use such recycled material.

[0009] An alternative solution is to separate the sleeve and consider two different departments: one dedicated to metallic materials and the other to synthetic materials for the rest of the mechanism. This solution is very costly in terms of sorting and requires that the elements of the mechanism can be easily separated from each other.

[0010] Therefore, there seems to be a need to develop a simplified mechanism for cosmetic products that can address at least some of the shortcomings of the prior art while also benefiting from an advantageously simple, reliable and inexpensive end-of-life recycling value chain. Summary of the invention

[0011] The present invention proposes a mechanism for cosmetic products, especially stick lipsticks, which includes a cup-shaped portion configured to accommodate the product, a sleeve, and a guide member arranged around the sleeve, wherein the cup-shaped portion includes at least one flexible protrusion, the sleeve includes a spiral groove for cooperating with the cup-shaped portion to make the product rise or fall, and the guide member includes at least one vertical sliding member, which defines the displacement path of the cup-shaped portion and cooperates with the at least one flexible protrusion.

[0012] According to this aspect of the invention, the sleeve, cup and guide are made of one type of metallic material.

[0013] The mechanism is thus a simplified one with a reduced number of parts. Furthermore, the use of metallic materials, in particular in the guided mechanism, improves the cooling of the formula of the cosmetic product after its pouring and its appearance, thereby shortening the duration of the production cycle.

[0014] Furthermore, since the mechanism is mainly metal, with the sleeve, cup and guide made of metal material, it can be processed in departments mainly dedicated to the recovery of metals. This allows a greater amount of material to be reused without additional losses or waste, to obtain optimal utility. This also allows the mechanism to be completely or partially cleaned and reused by high temperature cleaning treatments, without causing damage to the mechanism.

[0015] The mechanism according to this aspect of the invention may also have the following features, which may be used alone or in any technically possible combination to form many embodiments of the invention:

[0016] - the type of metal material is selected from aluminium, aluminium alloy, recycled aluminium, recycled aluminium alloy and / or steel,

[0017] - the guide covers the entire sleeve, preventing said sleeve from rotating from one of its edges,

[0018] - the sleeve comprises at its lower end at least one fastening means capable of removably fastening the sleeve to the base,

[0019] - the guide is rotatably integral with the cup,

[0020] - said at least one flexible tab is intended to partially interlock in at least one vertical slide of the guide,

[0021] - a mouthpiece is provided inside the sleeve, the mouthpiece being integral with the cup and being capable of forming an interface between the sleeve and the rod during the vertical displacement of the cup,

[0022] - the mouthpiece is made of metal material, allowing the container to be easily recycled in specialized departments,

[0023] the cup comprises tightening / loosening means in the form of lateral projections obtained by surface deformation and projecting radially inwards from the mechanism, said tightening / loosening means being positionable in the helical groove of the sleeve,

[0024] - the guide and the sleeve are connected integrally axially and are free to rotate relative to each other,

[0025] - at least one elastic ring is inserted between the cup and the guide, said elastic ring being able to control the operating torque between the guide and the cup,

[0026] - at least one annular seal is provided between the guide and the sleeve to control the rotational torque between the sleeve and the guide,

[0027] -Metal material is anodized aluminum,

[0028] - the guide covers the entire sleeve, said sleeve being actuable only when the mechanism is inserted into the base,

[0029] - the sleeve comprises at its lower end at least one fastening means capable of removably fastening the sleeve to the base,

[0030] -The cup is composed of two parts,

[0031] - the cup contains a cutout with a T-shaped tab,

[0032] - a plastic interface capable of managing the retention of the mechanism in the base,

[0033] - the plastic interface comprises deformable ridges capable of managing the operating torque via guides,

[0034] - the plastic interface portion includes ridges that prevent rotation of the interface portion with the base portion,

[0035] -Institutions are directed institutions,

[0036] - The rod body is obtained by hot casting method,

[0037] - the cosmetic product is lipstick,

[0038] - the mechanism comprises at least one identification pattern configured to cooperate with the means for identifying the base so as to be able to mount the mechanism on the base and to enable the entry and / or exit of the cosmetic product,

[0039] the mechanism can be replaced, in particular after the cosmetic product has been used up, so as to be able to continue using the container by means of a new mechanism which forms a refill,

[0040] The interface portion comprises a peripheral deformable rib arranged on the second housing and intended to come into contact with the wall of the lower portion of the body of the guide.

[0041] The invention also relates to a container for a cosmetic product, comprising a base, a lid positionable on the base and a mechanism according to any one of claims 1 to 12.

[0042] According to this aspect of the invention, the mechanism is configured to be mounted on the base to enable entry and / or exit of the cosmetic product.

[0043] Different embodiments according to the invention which can be used together or separately:

[0044] The mechanism is selectively and removably positionable on the base, the base comprising a blocking device configured to prevent the mechanism from rotating relative to the base and / or being removed,

[0045] The base, lid, cup, guide and sleeve are all made of the same metal material, allowing the container to be easily recycled in specialized departments,

[0046] The base comprises at least one fastening means for axially connecting the base to the mechanism,

[0047] The bottom of the base is configured to connect to an interface portion that enables the mechanism to be fastened to the base,

[0048] The container is designed so that after the cosmetic product has been used up, the mechanism can be replaced to insert a freely replaceable refill. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Other features and advantages of the present invention will become apparent from reading the following detailed description, and for a better understanding of these features and advantages, reference will be made to the accompanying drawings, in which:

[0050] - Figure 1a shows a side view of a container including a mechanism assembled in a base and a lid located above;

[0051] - Figure 1b Shows Figure 1a A side view of the mechanism assembled in the base;

[0052] - Figure 1c It is an exploded view of the container;

[0053] - Figure 2a schematically illustrates an axial cross-sectional view of a mechanism for a cosmetic product according to an embodiment of the present invention;

[0054] - Figure 2b yes Figure 2a The floor plan of the institution;

[0055] - Figure 2c yes Figure 2a An exploded view of the mechanism;

[0056] - Figure 3a schematically shows an axial cross-sectional view of a mechanism according to an embodiment of the invention, wherein a seal manages the operating torque between a sleeve and a guide;

[0057] - Figure 3b Schematically shows an axial cross-sectional view of a mechanism according to an embodiment of the invention, wherein the seal is in another position to manage the operating torque and axial retention between the sleeve and the guide;

[0058] - Figure 3c schematically shows an axial cross-sectional view of a mechanism according to an embodiment of the invention, wherein a seal manages the operating torque between the cup and the guide;

[0059] - Figure 4a A perspective view of a cup-shaped portion according to an embodiment of the present invention is shown, wherein the cup-shaped portion has a hole for receiving a rod body;

[0060] - Figure 4b A perspective view of a cup according to an embodiment of the present invention is shown, wherein the cup has a restriction for holding a rod;

[0061] - Figure 4c A perspective view of a cup according to an embodiment of the present invention is shown, wherein the cup has two limiting members for holding a rod;

[0062] - Figure 4d shows a perspective view of a cup according to an embodiment of the present invention, wherein the cup has a fixing tab for holding a rod;

[0063] - Figure 5a shows a perspective view of a cup according to an embodiment of the present invention, wherein the cup has a linear flexible tab;

[0064] - Figure 5b shows a perspective view of a cup according to an embodiment of the present invention, wherein the cup has a T-shaped flexible tab;

[0065] - Figure 6a shows a perspective view of a cup according to an embodiment of the invention, wherein the cup has a tightening / loosening device with two projections;

[0066] - Figure 6b shows a perspective view of a cup according to an embodiment of the invention, wherein the cup has a tightening / loosening device with four lugs;

[0067] - Figure 6c shows a perspective view of a cup according to an embodiment of the invention, wherein the cup has a tightening / loosening device with two threads;

[0068] - Figure 7a showing a cross-sectional view of the mechanism assembled with the interface portion;

[0069] - Figure 7b Shows Figure 7a Exploded diagram of

[0070] - Figure 7c yes Figure 7a An isometric view of the interface portion;

[0071] - Figure 8a shows a cross-sectional view of a container wherein the interface portion forms part of the base portion;

[0072] - Figure 8b shows a cross-sectional view of a container wherein a mouthpiece is disposed inside a sleeve;

[0073] - Figure 8c shows a cross-sectional view of a container wherein the interface portion forms part of the mechanism;

[0074] - Figure 9a A cross-sectional view of the cup and mouthpiece is shown;

[0075] - Figure 9b A cross-sectional view of the mechanism with the mouthpiece and wand is shown. DETAILED DESCRIPTION

[0076] By convention, the "axial" or "longitudinal" direction corresponds to the direction of the primary Y-axis shown in the figures, and the "radial" direction is orthogonal to the axial direction. In the following detailed description of the drawings, the terms "upper" and "lower", or "top" and "bottom" will be used in a non-limiting manner with reference to the axial direction. Likewise, the terms "external or outer" and "inner or inner" are used with reference to the radial direction, with outer elements being radially further from the Y-axis than inner elements.

[0077] exist Figure 1a to Figure 1c In the embodiment, an example of a mechanism 11 of a cosmetic product is shown. In this embodiment, the cosmetic product 11 is a stick lipstick for application by friction, in a variant, the cosmetic product is a lip balm. The container 100 comprises a lid 102 associated with a base 104 of complementary shape. The container 100 has a main Y-axis extending in an axial direction. In a non-limiting manner, the lid 102 and the base 104 of the container 100 have a cylindrical shape of a circular cross section.

[0078] Preferably, the cover 102 is removable, forming a completely independent part from the base 104. Figure 1a As shown, the lid 102 may occupy a closed position in which the lid is integral with the base 104. Figure 1b As shown, the cover may occupy an open position in which the cover 102 is separated from the base 104, in particular for applying a cosmetic product.

[0079] Advantageously, if Figure 1a to Figure 1c and Figure 8c As shown, the lower part of the lid 102 in the closed position cooperates with the hoop 103 provided on the upper part 110 of the base 104. The lid and the base are hollow parts, the lid 102 being closed at its upper end by a wall 117 covering the top, while the base 104 is closed at its lower end by a bottom 118. Advantageously, the bottom 118 comprises a central hole 119 for hot pouring of the cosmetic product.

[0080] The container 100 is intended to house a mechanism 10 for dispensing a cosmetic product. Advantageously, the mechanism 10 can be replaced, in particular after the cosmetic product has been used up, so as to be able to continue using the container with a new mechanism, which forms a refill.

[0081] The mechanism 10 is designed to contain a cosmetic product and is driven from a retracted storage position to a protruding use position by actuation of the base 104 by the user, as will be described later. The container is designed to allow replacement of the mechanism after the cosmetic product is exhausted to insert a freely replaceable refill.

[0082] Advantageously, this design allows the lid and base of the container to be retained and several mechanisms can be used, including, for example, a lipstick stick in different shades.

[0083] The mechanism 10 comprises at least three parts, namely a cup 212 for accommodating at least a portion of the cosmetic product 11, a guide 316 and a sleeve 434, which will be described in detail later with reference to an embodiment according to the present invention. Preferably, the sleeve 434, the cup 212 and the guide 316 are made of a type of metal material. The type of metal material is selected from aluminum, aluminum alloy and / or steel. Advantageously, the metal material is anodized aluminum.

[0084] In one variant, the metal material is recycled aluminum or recycled aluminum alloy. This design can save energy. In fact, the recycling of aluminum requires much less energy than the energy used to produce virgin metal. In addition, aluminum can be recycled without loss of quality.

[0085] Preferably, the guide covers the entire sleeve, preventing the sleeve from rotating from one of its edges. Figure 8a As shown, the mechanism can be activated only when it is placed in a specific base with a corresponding associated configuration. To this end, the mechanism comprises at least one pattern for identification, which is configured to cooperate with the identification means of the base so as to be able to mount the mechanism on the base and enable the entry and / or exit of the cosmetic product.

[0086] Thus, the entry and / or exit mechanism of the cosmetic product can only be actuated if the refill is correctly associated in the base, which is only possible if the identification pattern of the mechanism corresponds to the means of identifying the base. For example, the pattern can be a specific angular orientation. This makes it possible to avoid damage to the mechanism in particular if the refill does not fit the base.

[0087] The base and the lid may be made of the same type of metallic material. Thus, according to a preferred embodiment of the invention, the base, the lid, the cup, the guide and the sleeve are all made of the same metallic material, so that the container can be easily recycled in a specialized department. Preferably, the type of metallic material is selected from aluminum, an aluminum alloy and / or steel. Advantageously, the material is anodized aluminum.

[0088] In one variation, the metallic material is recycled aluminum or a recycled aluminum alloy.

[0089] The mechanism is mainly metal, having a sleeve, cup and guide made of metal material, so that the mechanism can be processed in departments mainly dedicated to the recovery of metals. Therefore, this allows a larger amount of material to be reused without additional losses or waste, so as to obtain optimal utility. This also allows the mechanism to be cleaned and / or recycled by high temperature cleaning treatment without causing damage to the mechanism. Therefore, the mechanism allows the cup, sleeve and guide to be processed together without separation. In a variant, the base, cover, cup, sleeve and guide can be processed together without separation.

[0090] according to Figures 1a to 8c The mechanism 10 of the embodiment shown is particularly used to contain cosmetic products with so-called soft formulas. In the case of cosmetic products with such formulas, the cosmetic products are in contact with the entire or partial inner wall of the guide 316.

[0091] The cosmetic product is introduced inside the mechanism during the hot pouring method. Using a metal material to manufacture the mechanism enables faster cooling of the hot poured cosmetic product, since the material has good thermal conductivity.

[0092] Advantageously, shortening the cooling time can shorten the duration of the production cycle and improve the appearance of the cosmetic product, particularly making it smoother.

[0093] Preferably, the lower part 114 of the base 104 comprises a retaining device inside to prevent the mechanism from being pulled out relative to the base, i.e. to prevent the mechanism from being vertically displaced relative to the base. For example, the retaining device may be such as Figure 8a and Figure 8c The harpoon system 108 is shown.

[0094] In addition, the lower portion 114 of the base 104 includes an anti-rotation device 120, so that any rotational movement about the Y axis applied by the user to the lower portion 114 of the base 104 is directly transmitted to the mechanism 10. As for these anti-rotation devices, the anti-rotation device can be, for example, Figure 7a The meshing system shown and / or Figure 7b , Figure 8a to Figure 8b The protrusions shown are located on the surface of the mechanism.

[0095] Preferably, the bottom 118 of the base 104 is configured to connect to an interface portion 538 that enables the mechanism to be fastened to the base.

[0096] Advantageously, if Figure 8a and Figure 8bAs shown, the interface portion forms a part of the base portion. The interface portion comprises an axially extending hollow cylinder 511, which is defined by an upper edge 513 and a lower edge 515. The lower edge 515 of the cylinder 511 forms an opening 514, which is referred to as the opening of the interface portion.

[0097] Advantageously, the interface portion 538 is made of aluminum. According to an embodiment of the invention, said lower edge 515 of the interface portion 538 is configured to be positioned through an opening 119 formed at the level of the bottom 118 of the base and then retained by snapping on a protrusion 151 around said opening 150 .

[0098] Snap-fit ​​means the operation of folding the lower edge 515 of the interface portion 538 against the protrusion 151 formed at the level of the bottom 118. This folding makes it possible to establish a wall-to-wall contact between the lower edge 515 and the protrusion 151 to integrally fix the interface portion 538 on the base 104. Figure 8a and Figure 8b As shown, this folding is possible here due to the trumpet shape of the lower edge 515 and the complementary shape of the protrusion 151. Figure 8a and Figure 8b As shown, this folding is performed in particular so that the opening 514 of the interface portion is aligned with the opening 150 of the bottom 118 of the base 104. The term "snap" can also be understood as the interface portion being pressed into the bottom 118 of the base 104.

[0099] Advantageously, if Figure 8a As shown, the harpoon 108 is a cutout arranged on the cylindrical body 511 and can be placed on the inner peripheral edge of the interface portion to position so as to block the mechanism axially relative to the base, and the cutout is, for example, an outer groove. In the example, the engagement device 120 is further formed by a protrusion 122 protruding relative to the cylindrical body 511 and can be positioned in a slot 450 on the wall of the mechanism 10, which will be described below.

[0100] In a variant not shown, the interface part 538 made of aluminum is made in one piece with the base part made of aluminum.

[0101] In one variation, the interface portion 538 forms part of the mechanism 10, such as Figures 7a to 7c and Figure 8cAs shown. Therefore, in order to adapt to different base structures, the mechanism is held on the base by an interface portion 538. The interface portion 538 is arranged in the form of a tubular component, which axially includes an upper portion 545 having a shell 551 (referred to as a first shell), the shell 551 having a side wall 551a and an upper edge 551b, and the upper edge 551b is configured to cooperate with the harpoon 108 of the base to prevent the mechanism 10 from being pulled out relative to the base 104, that is, to prevent the mechanism 10 from being vertically displaced relative to the base 104.

[0102] Thus, the bottom 118 of the base 104 comprises three flexible tabs, the free ends of which are configured to form hooks 70 in the form of harpoons. The harpoons are spaced 120° apart, cooperate with the upper edge 551b of the interface portion 538, and serve as fixing means for axially connecting the base 104 to the mechanism 10.

[0103] Furthermore, the lower part 555 has a housing 552, referred to as the second housing, having side walls 552a and a lower edge 552b configured to house a ridge 560 for cooperating with the slot 122 of the base 104 of the housing 100. In the example, the ridge 560 of the interface 538 and the slot 122 of the base 104 have complementary shapes and constitute said engagement means 120. Thanks to the engagement means 120, the entire rotational movement about the Y axis exerted by the user on the lower part 114 of the base 104 is transmitted to the mechanism 10 through the interface 538.

[0104] Advantageously, the interface portion 538 includes two protrusions 580, which extend radially from the first shell 551 and the second shell 552 and are arranged radially opposite to each other in the same plane. The two protrusions 580 are used to interlock in the two slots 450 of the sleeve 434 (described later) to prevent the sleeve 434 from rotating relative to the base 104. The protrusions 580 and the slots 450 thus form an anti-rotation system.

[0105] In addition, the edges 522b and 521b have openings that allow the cosmetic product to pass during the hot pouring method. The joint between the upper part 545 and the lower part 555 has a shoulder 565, which forms a support (described later) for accommodating the cup-shaped part 212 so as to block the displacement toward the bottom of the cup-shaped part 212 adjacently. The interface part 538 includes a peripheral deformable rib 580 arranged on the second shell 552, which is used to contact the wall of the lower part of the body 320 of the guide member 316. The guide member 316 will be described later. This contact enables the operating torque between the interface part 538 and the guide member 316 to be controlled.

[0106] Preferably, the interface portion 538 can be made of any synthetic material, such as thermoplastic elastomer (TPE), low-density polyethylene (LDPE), synthetic polymers, polypropylene (PP), polyethylene (PE), composite materials, polyethylene terephthalate (PET), post-consumer recycled materials (PCR), high-density polyethylene (HDPE) and / or similar materials. In particular, the synthetic material can be selected from a fluoroelastomer material (FKM) that withstands high-temperature cleaning treatments above 150°C.

[0107] Reference Figure 8a The hoop-shaped portion 103 of the base 104 includes a lower portion 124, an upper portion 125, and an intermediate portion 126 connecting the lower portion 124 and the upper portion 125. In addition, the lower portion 124 and the upper portion 125 are configured to apply radial pressure to the upper portion 110 of the base and the outer wall of the mechanism, respectively. Therefore, this arrangement enables the upper portion 110 of the base to be positioned relative to the mechanism.

[0108] The intermediate portion 126 of the hoop 103 forms a collar having a diameter substantially equal to the outer diameter of the base 104. Advantageously, the intermediate portion 126 has a shoulder 129 forming a seat for receiving the lid 102 and ensuring that it is axially retained on the base 104 in the closed position.

[0109] Preferably, the cup 212 is made of a single component and comprises an axially extending hollow cylinder delimited by an upper edge 213a and a lower edge 213b, respectively.

[0110] Like the central hole of the base 104 of the container 100, the cup 212 comprises a central channel, the entrance of which is defined by the edge 213b, and through which the hot pouring of the cosmetic product is carried out. The mechanism 10 is installed in the base 104, for example reproducing the container 100, so as to position the container 100 with the bottom 118 at the top, and then the hot pouring method of the cosmetic product is carried out axially from the top to the bottom.

[0111] Preferably, the cup 212 comprises tightening / loosening means 214 having the shape of a lateral projection obtained by a surface deformation 214 and projecting radially inwards from the mechanism, said tightening / loosening means being positionable in a helical groove of a sleeve 434. The sleeve 434 will be described subsequently.

[0112] According to an embodiment of the invention, the tightening / loosening means 214 have the form of threaded projections diametrically opposed to one another, having a circular cross-sectional profile obtained by surface deformation, for example by stamping.

[0113] exist Figure 6b In the variant shown, the cup comprises four projections. Figure 6c In the variant shown, the cup comprises tightening / unscrewing means in the form of a thread 228 and thus has a concave profile.

[0114] The number of bumps, threads or their width enables more stable management of the operating torque during tightening or loosening of the helical groove of the sleeve 434 .

[0115] In a variant not shown, the cup 212 is composed of two parts, which are an upper cup and a lower cup for containing the cosmetic product. Therefore, the lower cup includes the tightening / loosening device for cooperating with the sleeve 434.

[0116] The cup 212 includes means for securing the rod near the edge 213a. Figures 4a to 4d and Figure 8a As shown, the cup comprises means 215 for fixing the rod, such as holes 215a, fixing tabs 215b directed substantially radially inwards and / or recesses 215c on its side wall 211, so that the rod can be connected to the cup 212. Advantageously, the recess 215c is produced by radially inward surface deformation and extends circumferentially by forming concentric circles around the rotation axis of the cup 212.

[0117] like Figures 4a to 4d , Figure 5a and Figures 8a to 8c As shown, the cup 212 is made in one piece and accordingly includes an upper cup portion 212a for containing the cosmetic product and a lower cup portion 212b surrounding the sleeve 434. An inner recess 215c connects the upper cup portion 212a and the lower cup portion 212b.

[0118] Preferably, the cup 212 comprises at least one flexible tab for partially interlocking in at least one vertical slide of the guide.

[0119] According to an embodiment of the invention, the cup 212 comprises two flexible tabs 270 connected to the cup 212 from its upper portion 276, while the lower end 277 of the flexible tab 270 is free and can be radially displaced. The free end 277 of the flexible tab 270 has a surface deformation in the form of at least one lug 275 having a profile of a predominantly cylindrical cross section, so as to interlock in said vertical slide 332 of the guide 316.

[0120] In this example, the lug 275 is obtained by stamping. The width of the lug 275 corresponds substantially to the width of the vertical slide 332 so as to prevent the rotation of the cup 212 of the guide 316. The guide is thus rotatably integral with the cup. When the cup 212 is assembled with the guide 216, the two flexible tabs 270 move radially inwards and then elastically return radially outwards in the final assembly stage to be automatically accommodated in at least one slide of the guide 316, respectively.

[0121] According to a rectilinear cut of predetermined width “I”, two flexible tabs 270 are obtained extending in the axial direction and spaced apart from the cylindrical outer body 252 of the cup 212 by a constant distance “e” over the length of the flexible tabs 270 .

[0122] Advantageously, the shape of the two flexible tabs 270 extending in the axial direction is obtained according to a cutout that forms a variable spacing "e" with the outer cylindrical body 252. Figure 5b As shown, the width of the flexible tab is greater at its upper portion 276 than at its end 277. The shape of the base of the flexible tab allows greater contact with the guide on the surface and increases the rigidity of the tab, allowing better stability during actuation of the mechanism. Therefore, this, on the one hand, enables satisfactory operating effects to be obtained for the user.

[0123] Advantageously, the cover 212 is formed from a single piece made of aluminium, obtained by machining, for example by stamping.

[0124] The guide 316 comprises a hollow cylinder and mainly comprises an upper part, hereinafter referred to as a head 318, and an axially extending lower part, hereinafter referred to as a body 320. The head 318 of the guide 316 has a smooth inner wall 318 which ensures lateral support for the guidance of the rod body, and the body 320 of the guide 316 ensures the guidance of the cup according to the axial translation movement during the actuation of the mechanism.

[0125] According to an embodiment of the invention, the body 320 of the guide 316 comprises two vertical slides 332 arranged diametrically opposite one another and configured to slidably receive the lugs 275 of the cup 212. The cup 212 is mounted to be axially movable in the guide 316, and each slide 332 has ends 278, 279 which naturally form an end seat for the lugs 275 of the guide 316. The distance between the ends 278 and 279 defines the displacement path of the cup 212 in the mechanism 10.

[0126] Preferably, the guide and the sleeve are axially integrally connected and free to rotate relative to each other. Thus, at the bottom of the mechanism, the body 320 of the guide 316 comprises an outer recess 322 positioned towards the recess 422 of the sleeve to prevent the sleeve 434 from axial displacement relative to the guide, while allowing the sleeve 434 to rotate freely in the guide 316. Advantageously, the outer recess 322 of the guide and the recess 422 of the sleeve are obtained by lateral deformation of the walls of the guide and the sleeve, for example by stamping.

[0127] Preferably, annular seals 460 , 490 are disposed between the guide and the sleeve to control rotational torque between the sleeve 434 and the guide 316 .

[0128] According to the implementation mode, Figure 3a As shown, a first annular seal 460 is provided in a housing formed between said outer recess 322 of the guide and said recess 422 of the sleeve. Advantageously, in this arrangement, the first annular seal 460 enables the sleeve 434 to be axially fixed relative to the guide while allowing the sleeve to rotate freely in the guide and also allows the rotational torque between the sleeve 434 and the guide 316 to be controlled.

[0129] According to an embodiment of the present invention, Figure 3b As shown, the outer recess 322 is positioned adjacent to the recess 422 of the sleeve, which has the same geometry and the same radial direction as said outer recess 322. Advantageously, this arrangement makes it possible to axially fix the sleeve 434 relative to the guide 316 while allowing the sleeve 434 to rotate freely in the guide 316. Advantageously, a second annular seal 490 is located between the second recess 423 arranged on the sleeve and the inner wall of the guide in order to control the rotational torque between the sleeve 434 and the guide 316.

[0130] The guide 316 comprises an upper edge 348, here in the form of an angle, and an axially opposite lower edge 350 of circular shape. Figures 1a to 8c In the embodiment shown, the cup and the guide have a cylindrical profile. The mechanism according to the invention enables the mechanism 10 to be guided without the outer profile of the cup and the profile of the guide having to be cylindrical.

[0131] The sleeve 434 comprises a hollow cylinder comprising at least one spiral groove 442 arranged in an outer wall 444 thereof. Preferably, the guide 316 is arranged around the sleeve 434. The sleeve 434 is mounted inside the body 320 of the guide 316.

[0132] according to Figure 2cIn the embodiment shown, the sleeve 434 includes a helical groove 442 for cooperating with at least one protrusion 214 of the cup 212. Thus, actuation of the mechanism by rotating the sleeve 434 causes the cup 212 to translate, thereby causing the cup to be axially displaced. Thus, the sleeve 434 includes two slots 450 at its lower end 430, arranged axially and radially opposite to each other. When the sleeve 434 is assembled with the guide 316, the two slots 450 enable the lower end 430 to deform radially inwardly to facilitate interlocking.

[0133] Preferably, the two axial slots 450 are used to directly interlock the interface portion 538 to prevent the sleeve 434 from rotating relative to the base 20. The two protrusions 580 of the interface portion are used to interlock in the two slots 450 of the sleeve 434. The protrusions 580 and the slots 450 thus form an anti-rotation system.

[0134] Preferably, the sleeve 434 comprises at its lower end 430 at least one fastening means 433 capable of removably fixing the sleeve to the base. Thus, the fastening means 433 of the sleeve are intended to interlock in the housing 25 of the base 20. Figure 2c In the embodiment shown, the sleeve comprises two fastening means 433 arranged diametrically opposite each other at the lower end of the sleeve 434. The two fastening means 433 are lateral protrusions obtained by surface deformation, directed inwards from the mechanism and having a circular cross-sectional profile, for abutting cooperation with complementary shapes of said fastening means 433.

[0135] In the so-called soft rod formulation, the rod is hot poured into the interior of the structure during its formation and then assumes its outer shape in contact with the inner wall of the structure, in particular with the head 318 of the guide 316 and the inner wall of the sleeve. The rod undergoes material removal during cooling and then assumes its final shape. Figure 9b As shown, the stick body includes an upper part 710 and a lower part 720, wherein the upper part 710 is used to be consumed by the user during the application process, and the lower part 720 is permanently retained inside the mechanism and enables the stick body to be supported. The stick body also includes a middle part 715 fixed on the cup-shaped portion by a fixing device 215b, and the middle part connects the lower part 720 and the upper part 710.

[0136] The inner wall of the head 318 of the guide 316 has a smooth contact surface. A smooth contact surface means that the surface has no holes, and no local concave or convex parts that may damage the rod body, especially during the formation of the rod body and / or the vertical displacement of the rod body in the mechanism. Therefore, the upper part 710 of the rod body does not interfere with the head 318 of the guide 316.

[0137] Preferably, the mouthpiece 750 is disposed inside the sleeve 434. The mouthpiece 750 includes a hollow cylinder 760 and an inner wall 770 having a smooth contact surface.

[0138] Advantageously, if Figure 9a and Figure 9b As shown, the mouthpiece is arranged inside the sleeve, the mouthpiece is integral with the cup and is able to interlock between the sleeve and the rod during the vertical displacement of the cup. Therefore, during the formation of the rod, the lower part of the rod bears on the inner wall 770 of the mouthpiece 750 and does not come into direct contact with the inner wall 490 of the sleeve 434. Therefore, during the axial displacement of the cup 212, the lower part 720 of the rod does not interfere with the other parts of the mechanism. The mouthpiece 750 is clamped between the upper edge of the interface part 551b and the fixing lug 215c, and is adjacent to the upper edge of the interface part 551b and the fixing lug 215c respectively.

[0139] Preferably, the mouthpiece 750 is made of a metallic material so that the container can be easily recycled in a specialized department. Preferably, the type of metallic material is selected from aluminum, aluminum alloy and / or steel. Advantageously, the material is anodized aluminum. In a variant, the metallic material is recycled aluminum or recycled aluminum alloy.

[0140] In one variation, the mouthpiece 750 can be made of any synthetic material or made of paper. For example, thermoplastic elastomer (TPE), low-density polyethylene (LDPE), synthetic polymers, polypropylene (PP), polyethylene (PE), composite materials, polyethylene terephthalate (PET), post-consumer recycled (PCR), high-density polyethylene (HDPE) and / or similar materials. In particular, the synthetic material can be selected from a fluoroelastomer material (FKM) that withstands high-temperature cleaning treatments above 150°C.

[0141] Preferably, at least one elastic ring 610 is inserted between the cup-shaped portion and the guide, and the elastic ring is capable of controlling the operating torque between the guide and the cup-shaped portion. Therefore, in order to improve the stability of the operating torque during the actuation of the mechanism for raising and lowering the cosmetic product, the elastic ring 610 is at least partially accommodated in the inner recess 216 of the side wall 211 of the cup-shaped portion 212.

[0142] Advantageously, the same inner recess 216 allows the rod to be retained on its inner portion 217 on the one hand and the elastic ring to be retained on its outer portion 218 on the other hand, thus making it possible to control the operating torque. Figure 3cAs shown, the elastic ring contacts the inner wall of the head 318 of the guide 316, so that the relative displacement of the cup 212 relative to the guide 316 can be controlled. In other words, during the displacement of the cup 212, the contact area between the elastic ring 610 and the inner wall of the head 318 of the guide 316 can accurately control the friction force. Therefore, this elastic ring can prevent the displacement of the lipstick stick from being too large relative to the user's expectation. This elastic ring can also avoid the problem of unpleasant noise caused by the friction between aluminum parts, especially the friction between the guide and the cup.

[0143] Preferably, the elastic ring 610 is a seal which can be made of any synthetic material, for example of rubber or of another suitable elastomeric material, such as polypropylene (PP) or polyethylene (PE). The mass of this seal is very low relative to the mechanism 10, and the seal will be eliminated by burning in an appropriate recycling process. However, the seal can also advantageously be selected from a temperature-resistant fluoroelastomer material (FKM). In order to obtain the mechanism for new use, the mechanism, advantageously made of aluminum material, can be cleaned and collected by a suitable high-temperature cleaning process, in particular a high-temperature cleaning process above 150°C.

Claims

1. A mechanism (10) for a cosmetic product, the mechanism comprising a cup (212) configured to accommodate the cosmetic product, a sleeve (434) and a guide (316) arranged around the sleeve, the cup comprising at least one flexible tab (270), the sleeve comprising a spiral groove for cooperating with the cup to raise or lower the cosmetic product, the guide comprising at least one vertical slide, the at least one vertical slide defining a displacement path of the cup and cooperating with the at least one flexible tab, characterized in that The sleeve (434), the cup (212) and the guide (316) are made of a type of metal material, Therein, the cup-shaped portion (212) includes a tightening / loosening device (214), which has the form of a side protrusion obtained by surface deformation (214) and protruding radially inward from the mechanism, and the tightening / loosening device can be positioned in the spiral groove of the sleeve (434).

2. The mechanism according to claim 1, wherein: The type of the metal material is selected from aluminum, aluminum alloy, recycled aluminum, recycled aluminum alloy and / or steel.

3. The mechanism according to claim 1 or 2, wherein: The guide covers the entire sleeve, preventing the sleeve from rotating from one of its edges.

4. The mechanism according to claim 1 or 2, wherein: The sleeve comprises at its lower end at least one fastening device capable of removably fixing the sleeve to a base.

5. The mechanism according to claim 1 or 2, wherein: The guide member is rotatably integral with the cup-shaped portion.

6. The mechanism according to claim 5, wherein: The at least one flexible tab is adapted to partially interlock within at least one vertical slide of the guide.

7. The mechanism according to claim 1, wherein: The cosmetic product is a stick of lipstick.

8. The mechanism according to claim 7, wherein: The sleeve is provided with an interface tube inside, which is integrated with the cup-shaped portion and can form an interface between the sleeve and the rod body during the vertical displacement of the cup-shaped portion.

9. The mechanism according to claim 8, wherein: The mouthpiece (750) is made of a metallic material, allowing the container including the mechanism to be easily recycled in specialized departments.

10. The mechanism according to claim 1 or 2, wherein: The guide member and the sleeve are axially connected in one piece and are freely rotatable relative to each other.

11. The mechanism according to claim 1 or 2, wherein: At least one elastic ring is interposed between the cup and the guide, the elastic ring being capable of controlling the operating torque between the guide and the cup.

12. The mechanism according to claim 1 or 2, wherein: At least one annular seal (460, 490) is disposed between the guide and the sleeve to control rotational torque between the sleeve (434) and the guide (316).

13. A container (100) for a cosmetic product, comprising a base (104), a lid (102) positionable on the base and a mechanism (10) according to any one of claims 1 to 12, wherein: The mechanism (10) is configured to be mounted on the base (104) to enable entry and / or exit of cosmetic products.

14. The container (100) according to claim 13, wherein: The mechanism (10) is selectively and removably positionable on the base (104), the base comprising a blocking device configured to prevent the mechanism (10) from being rotated and / or removed relative to the base (104).

15. The container (100) according to claim 13 or 14, wherein: The base, the lid, the cup, the guide and the sleeve are all made of the same metal material, allowing the container to be easily recycled in specialized departments.

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